Shock-absorber.



No. 823,829. PATENTBD'JHNEJQ, 190a.

0-.- E. VESI'AL. SHOCK ABSORBER.

APPLICATION FILED AUG.24.1905.

IINVENTOR UmrnD-smrns miss on osqae; E. 'vEsT L, OF ITTS URG, PENNsYLvAiSi IA. s|+| f ok-4\'Bs o|=zLass.

- Applicatibnliledlugnst 24.1905; Serial 110,275,528.

To a, whom it mag/concern:

. Beit knownthat'I, OSCAR vtsm, mu-

zen of the United States, residing at Pittsburg, 1n the count of Allegheny and State of Pennsylvania, ave" invented a certainnew and useful Shock-Absorber, ofwhichthe' following is a specification.

reliable at all time's and which can be constructed at a low cost, and the resistanceor' friction whereof can'be readily adjusted and can be renewed" with a minimum of trouble.

the wearing parts whereof .The'ab'ove, as well as such objects as may hereinafter appear,,I attain by meansof a,

construction which is illustrated in preferred formin the accompanying drawings, where- Figure '1- is a sideielevation showing an automobile spring attached at one'end of the frame ofthe vehicle, having my improvement appliedthereto;

Figure -2'is an enlarged view. showing more ofthe details of construction;

Fi re 3 is a sectional viewtaken-on the'line (3) o. Figure-2, and

. 1-, itwill be seen that Figure 4 is a-detailed view showing the at taching device by which the'mecha'nism is secured to the spring.

articularly to Figure have indicated at 5 the rear end of an automobile'frame of usual construction, the axle of the vehicle being shown at 6, and the spring hanger'at theforward end of' the spring at 7, the'spring itself Referring now more being -marked 8, and being secured to the axle by the usual form of- U-bolt's or clips indicated at 9. Above the spring, and also secured preferably by means of the U-bolts 9,

I have constructed a special form of cross'-' bar '10,, provided with an outwardly projecting pinil 1 adapted to enter the-connecting link. 12 that serves to im art the'n o'vement of the axle and center 0' the spring to my shock absorbing device secured upon the frame 5.

Theshock absorbing device proper consists of the member .13 Which is-preferably Specificationof Letters Patent; 7, v

.Patented Jun 19, 1-906. 3

formed 'Of' drum of cylindrical shape,- have" i ing the friction surface 14,. andhollowed out inside 'in'a shape adapted to receivepreferably the two. attaching bolts 15 that formside thereof the upstanding flanges 16, and? dicated at 18 .to the h 12, and attheother 1s formed to go'aroun and embrace the eyl.

1601. the meansof securi'ng'the'. drum 13 t'o'lthe' frame 5,. '{The friction surface 14 has at'each between such upstanding flanges andengaging such friction surface is the rocking ts" inember 17 which is s cured atone end as in inderorfldrum as sho 'n, bein provided 01 1;,

its inner face with a eather. ining i9, and

:slitted at 20, so as to allow the use of abolt 2'1 with the lock nut 22-fo'r adjusting the'tenf 'sion of the band around the drum." Between the forked ends pr extensions of the ban'd asindicated in Figure 2, I may use, if desired, a

, wooden-block 23, the thickness whereof may be changed, if desired, or which can be compressed by furt er. movement of the adjust 111g bolt-21 or t e-nut thereof. i It, is obvious; that with. the construction described, aIter the i frictionallining of the rockingpart 17. hf5j's1become worn soas to require renewal the bolt ,21 may be taken' out Zprung opento'allow it toi-b'e I and the band takenoff therum and the new,-lining,-in-

serted, I have-.described the frictional ma-- terial employed, as leather, but other equivalent substances may be used preferred;

. The o eration' of-my improvement is as follows: en the vehicle strikes anobstr'uctionwhich tends to .moye the axle upward, the link 12 transmits the upward force to the end of the armor projection oil-theoscillatment tends to retard the u ward throw of" -ing-part 17,','rotat1ng the band around the. drum with frictional resistance, which move-- more'troublesome element in action of this 'kind, 'a'nd the one most likely to break the ice springs..- It will be observed-that the m'ech ani'smis readily attached to anyvehi'cle of this character, and comprises but few arts and is not liable to getout of order, and as a friotionalresistance which is practically con:

stant and easily adjustable.

- Having thus described my inventionai d illu'stratedits use, What liclaimas new, and- "desireto secure by Letters Patent,-is thefolg lowin 1, fn combination, a vehicle body, a yehicle spring, a friction drum's'ecured to. the viii-:-

' ing an operatinga-nn intermediate the ends of the split band, means for securing the ends of the split band rigidly and adjustahly in position, and a connectingerm pirotnlly secured to the band arm at one end and. to the springs at the other.

2. In combination, a drum provided with attaching means. a split friction handprovided with securing lugs and an annn. an interposed yielding block netween the lugs. means for adjusting the relative position of the lugs, and means for seeuring' the arm to a spring.

3. In combination. adruni provided with attaching means, a split friction hand provided with securing lugs and an arm. yielding means between the lugs. means for adjusting the relative. position of the lugs, and means For securing the arm to a spring.

l n testimon whereof I have hereunder signed my name in the presenee of the two suhseribed witnesses.

OSCAR E. YESTAL.

\Yit nesses:

PA L'L Srx'xns'rvnn'r, F. E. Uwrrnnn. 

